I’ve worked on cars and engines for 50 years, and really the only ethanol related stuff I’ve seen is fuel lines in weed whackers and chain saws.
Which may be just cheezy Chinese polymers.
I’ve got a barn full of outdoor power equipment, ATVs, and stuff that’s run on E10 for its whole life, a lot of this stuff is over 20 yrs old.
I’m not a fan of the ethanol program, but I’ve just not seen all the problems folks continually allude to. Fuel tanks in old boats, yes, but again that’s a pretty small population.
That’s good news... I guess, since we will probably all be forced to use this stuff sooner or later.
When local gas stations started selling E10, they didn’t post any notices that it was E10. We noticed that our cars didn’t seem to have the pep they did before. I thought there was something wrong with my Mazda 3. Once a law was passed requiring stations to reveal what kind of gas they were selling, we bought real gas only and noticed a big difference in the cars’ performance.